# NTSB CHI80FEP55: Bensen B-8M, N37512, Franksville, WI, September 14, 1980

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: September 14, 1980
- Place: Franksville, WI · FRANKSVILLE, WI
- Location: 42.7600° N, 87.9134° W: Placed by OpenAirDocs: center of Franksville, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.7600&lon=-87.9134&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report February 23, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 127995
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI80FEP55
- Page: https://openairdocs.org/ntsb/CHI80FEP55

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3452  80/9/14    FRANKSVILLE,WI      BENSEN B-8M         CR-  1  0  0  NONCOMMERCIAL             STUDENT, AGE 29, 10 TOTAL
        TIME - 1535                    N37512              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - HUNT
        DEPARTURE POINT             INTENDED DESTINATION
          FRANKSVILLE,WI              LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: LOW PASS
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - CONTROL INTERFERENCE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
           AIRFRAME - FLIGHT CONTROL SURFACES: RUDDER SURFACES,ATTACHMENTS
        REMARKS- BOOT HEEL FD 30YDS FM ACFT W GROOVE ON HEEL ALIGNED W MARKINGS ON STEERING BAR.
```

## Aircraft

- Registration: [N37512](https://openairdocs.org/deregistered/N37512-2013-06-04), registration cancelled 2013-06-04, S/N 1 (OpenAirDocs)
- Reported make and model: BENSEN B-8M
- Registry model: [Holtz Stuart A HOLTZ B-8M](https://openairdocs.org/model/holtz-stuart-a-holtz-b-8m) (registry code 13021CN) (OpenAirDocs)
- Category: Gyroplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Hunt

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19800914041819A](https://openairdocs.org/incident/19800914041819A), Sep 14, 1980: Amtrbx BENSENB8M, Franksville, WI, Substantial damage. Indicates pilots oversized boot heal jammed rudder. Abrupt control used to free boot caused rotor to sever rudder.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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